* {
  margin: 0;
  padding: 0;
}

body {
  width: 100vw;
  height: 100vh;
  background-color: #34495e;

  display: flex;
  justify-content: center;
  align-items: center;
}

#app {
  position: relative;
}

#chalkCanvas {
  position: absolute;
  top: 0;
  left: 0;
}

.btns button{
  vertical-align: middle;
}

.btns button:not(.clear-btn):hover {
   cursor: pointer;
}